/*
 ============================================================================
 Page	     : 71-72
 Name        : talkback.c
 Date	     : 20210402
 Author      : Hbue 18060333
 Copyright   : Your copyright notice
 Description : 演示与用户交互
 ============================================================================
 */

#include <stdio.h>
#include <string.h>		// 提供strlen()函数的原型
#define DENSITY 62.4		// 人体密度(单位:磅/立方英尺)
int main(void)
{
	float weight = 0;
	char name[40];		// name是一个可容纳40个字符的数组

	printf("Hi! What's your first name?\n");
	scanf("%s", name);
	printf("%s, what's your weight in pounds?\n", name);
	scanf("%f", &weight);
	int size = sizeof name;
	int letters = strlen(name);
	float volume = weight / DENSITY;
	printf("Well, %s, your volume is %2.2f cubic feet.\n", name, volume);
	printf("Also, your first name has %d letters,\n", letters);
	printf("and we have %d bytes to store it.\n", size);

	return 0;
}

